A new strategic approach of energy management onboard ships supported by exergy and economic criteria: A case study of a cargo ship

Çetin, Oktay; Söğüt, M. Ziya

doi:10.1016/j.oceaneng.2020.108137

Cited by 18 publications

(4 citation statements)

References 10 publications

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“…for the transport of additional machines/people/products). For this reason, interest in electricity management systems for electric and hybrid ships has increased over the last few years [5][6][7].…”

Section: Energy Management As a Critical Aspect Of Safe Journeysmentioning

confidence: 99%

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Optimisation of the Energy Consumption of a Small Passenger Ferry with Hybrid Propulsion

Kunicka

2024

Polish Maritime Research

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The main goal in the design phase is to create a safe ship with a very efficient (and preferably zero-emission) propulsion system. To obtain such ships, new concepts are being developed for both propulsion systems and individual components. The choice of a propulsion system is not straightforward. To optimise the selection of the propulsion system, it is valuable to optimise the energy demand of this unit, which can be done by creating operational movement profiles that indicate the differences in energy demand needed to cover the same route within similar times. Optimisation can be performed based on many different criteria, especially for crowded waterways, and can not only reduce the amount of energy needed to power the propulsion system but also increase navigational safety. In this work, optimisation is carried out by searching the space of all possible solutions, which allows for an in-depth analysis according to various criteria.

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Section: Energy Management As a Critical Aspect Of Safe Journeysmentioning

confidence: 99%

“…1. [5] This paper presents an analysis of the optimisation of energy demand for the propulsion system. The energy needed to power other systems, such as lighting or heating, is not taken into account here.…”

Section: Ship Designmentioning

confidence: 99%

Optimisation of the Energy Consumption of a Small Passenger Ferry with Hybrid Propulsion

Kunicka

2024

Polish Maritime Research

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“…Currently, most studies on energy management strategies are based on the propulsion power demand during a cruise. However, very few studies have considered the influence of wind speed, wind direction, water depth, water velocity, and other navigation environmental factors [20–22]. Furthermore, research on speed optimization is based mainly on single‐objective static optimization and lacks the optimization scheme of the entire cruise as a multi‐attribute objective.…”

Section: Introductionmentioning

confidence: 99%

Enhancement method of series hybrid ship energy efficiency for speed and energy collaborative optimization

Yuan,

Wang,

Tong

et al. 2023

IET Electrical Syst in Trans

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Hybrid ships have recently garnered increasing attention as a promising solution for energy shortages and environmental pollution. However, changes in the navigation environment can greatly affect the energy efficiency of these vessels. Therefore, improving the energy efficiency of hybrid ships continues to be a key issue. Our study examined the energy efficiency of a diesel‐electric series hybrid ship operating on an inland river, and a method to optimise series hybrid ship energy efficiency was proposed. The energy consumption model, power demand model, and decision function with minimum fuel consumption as the evaluation criteria were established according to the ship's characteristics and hybrid system. By analysing the data collected from an actual ship, the operating conditions of the navigation environment were identified using the k‐means algorithm, and the total distance travelled by the ship was divided into several sub‐trajectories. Afterwards, the optimised speed of the ship and the optimised output power of each power source were determined using the grasshopper optimization algorithm. The ship's energy efficiency levels before and after using the energy efficiency enhancement method were compared and analysed, and the effects of this optimization method on the ship's energy efficiency in several typical voyages were analysed. Our findings demonstrated that this optimization method can distribute the output of the power source in a better way, thereby optimising the speed of the vessel and maintaining stable sailing. More importantly, the proposed method can reduce fuel consumption by 17.04%.

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“…According to the outcomes, it could be obtained that the maximum exergy destruction value was notified to be 39.88 kW for the condenser, meanwhile, the payback period and NPV findings were computed to be $165,814 and 7.4 years, respectively, considering the electricity price of 0.09 $/kWh. In their study, Çetin and Sogut [16] first developed an energy efficiency strategy framework to support efficient energy management as a decision-support element in ships. Energy efficiency and economic efficiency, exergy approach, and economic criteria have been analyzed by considering the ship's navigation processes.…”

Section: Introductionmentioning

confidence: 99%

Examination of a CI engine running on poppy seed oil biodiesel/n-pentanol/diesel fuel blends with respect of thermodynamic and economic perspectives

Yaman,

Saltan,

Doǧan

et al. 2023

STET

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The present study regards thermodynamic and economic analyses of a compression-ignition engine running on various blends of biodiesel, n-pentanol, and diesel at different ratios. Diesel fuel and n-pentanol were obtained from commercial companies while biodiesel was produced from poppy (Papaver somniferum L.) seed oil by transesterification method under laboratory conditions. Five fuel blends (diesel fuel, B30Pt30, B30Pt20, B30Pt10, and B30) prepared in different ratios by volume were used in the experimental process. Engine tests were performed at a stable speed (1500 rpm) and four different loads from 25% to 100%. Engine performance data from the dynamometer and harmful emissions from the exhaust emission device were determined. These data were used in energy, exergy, and economic analysis. The energy analysis determines how much of the fuel’s energy was spent on generating power from the crankshaft and thermal losses. In addition, the fuel inlet exergy, exhaust exergy, exergy of thermal losses, and exergy destruction were found throughout the exergy analysis, meanwhile, exergoeconomic analysis was conducted to understand the cost of the energy absorbed and losses at the crankshaft. At maximum engine load, energy efficiency was acquired to be between 25.99% and 34.63% and exergy efficiency between 28.87 and 32.34% as a consequence of the use of test fuels in the diesel engine. The higher cost of the work taken from the crankshaft in binary and ternary fuel blends in the study is on account of the high pump prices of biodiesel and n-pentanol compared to conventional diesel. At 100% load, the cost of the work noted from the crankshaft for diesel fuel, B30, B30Pt10, B30Pt20, and B30Pt30 fuels is 211.86, 2126.77, 3001.27, 3755.02, and 3755.02 $/GJ, respectively.

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A new strategic approach of energy management onboard ships supported by exergy and economic criteria: A case study of a cargo ship

Cited by 18 publications

References 10 publications

Optimisation of the Energy Consumption of a Small Passenger Ferry with Hybrid Propulsion

Optimisation of the Energy Consumption of a Small Passenger Ferry with Hybrid Propulsion

Enhancement method of series hybrid ship energy efficiency for speed and energy collaborative optimization

Examination of a CI engine running on poppy seed oil biodiesel/n-pentanol/diesel fuel blends with respect of thermodynamic and economic perspectives

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